“They color the city,” she said. “I wanted to take the pictures from above so there would be no distractions on the images beside the vendors.”

"As you can imagine, Hanoi is a very lively and busy city; lots of people, lots of trees, lots of motorbikes. If I would have taken a picture from [eye level] there would be a lot of other stuff going on on the image. I wanted to only have the street vendors on them."

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Heerink spent hours every day on various bridges, waiting for vendors to pass by.